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-40 <br /> ' r STATE OF CALIFORNIA-Environmental Protectio"�Agencyr/,r PETE WILSON, Govemor <br /> CALIFORNIA REGIONAL WATER QUALITY CONTROL BOA <br /> Of CAI <br /> CENTRAL VALLEY REGION - �. #` s} , ' <br /> 3443 Routier Road,Suite A � � f ' --- gg <br /> Sacramento,CA 95827-3098 8 <br /> PHONE:(916)255-3000 <br /> FAX: (916)255-3015 °1"'"" <br /> 10 March 1995 <br /> Ms. Cynthia Adkisson <br /> EBMUD <br /> P.O. Box 24055 <br /> Oakland, CA 94623-1055 <br /> EBMUD STOCMUN SERVICE CFMIM, 1804 WEST AMMSTREET, STOCKTON, SAN JOAQEW <br /> COUNTY <br /> I have reviewed your report,Addendum No. 1 to the Additional Site Assessment and Remedial <br /> Options Report; Remedial Action Plan (RAP), by EBMUD's consultant, Black and Veatch. The RAP <br /> also contained a Report of Waste Discharge (RWD) The adequacy of the RWD andthe necessity <br /> for a permit (Waste Discharge Requirements) will be addressed by Patricia Leary, of this office. <br /> The attached memoranda contain Underground Tank Unit staff..comments and questions regarding <br /> the RAP. <br /> The RAP is incomplete. -By 28 April 199A submit the following to San Joaquin unty and the <br /> Board: <br /> 1. Copies of all existing reports and work plans listed in . #1..and not submitted previously; <br /> 2. Explanations for not sampling MWS and MW7 since October 1992 and MW2, MW3, MW4, <br /> and MW6 since December 1993; <br /> 3. A work plan to conduct a constant rate.pumping test, investigate causes of the gradient <br /> variations; and institute 1st quarter sampling of MW2, MW3; MW4,.MW5, MW6, and MW7;. <br /> and <br /> 4. Responses to the comments and questions, shown in bold italic font, in Memo #2. Full <br /> explanations for the questions must be included with your. responses: <br /> Once we have reviewed your responses we.will reevaluate the RAP and schedule a meeting to <br /> review this project and the bioremediation proposal. If you have anyques tions, call"me at (916) <br /> 255-3133. <br /> ELIZA"TH A. THAYER <br /> Associate Engineer <br /> Attachments <br /> cc: Ms. Diane Hinson, San Joaquin County Environmental Health, Stockton <br /> Ms. Sharon Owen, Black & Veatch,-Concord <br />